reenable news schedulers - no new messages from 20.07

[blka]

hi, @Thommas2316 / @xueyuanl can you guys enable newsletter again please? - se the action tab:
"This scheduled workflow is disabled because there hasn't been activity in this repository for at least 60 days. Enable this workflow to resume scheduled runs."

[Thommas2316]

Hi @blka,

I sent over a PR for @xueyuanl to merge, so it should start wokring after it is merged :)

Have a nice day :)